SMG II - E46 M3
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Clutch slave cylinder BMW E46 M3 SMG II
The clutch slave cylinder of the BMW M3 SMG II is activated by the hydraulic unit and engages the clutch. The build-in sensor monitors the position of the piston the cylinder and calculates the status of the clutch.
Complete Hydraulic unit BMW E46 M3 SMG II
Compression Spring BMW E46 M3 SMG II
A broken compression spring can cause problems with the gear selection or adaption process.
Control unit SMG II
The basic control unit (German "Steuergerät", "SG") is the main computer chip responsible for the control of the SMG II. Please mind: the product photo is just a sample. The reference number of the delivered control unit may vary, the unit may need programming.
Hydraulic Unit Pump Motor BMW E46 M3 SMG II
[tabs] [tab title="The problem" start=open] The pump supplies the hydraulic pressure for the different consumers (actuators) of the SMG and stores it in the pressure accumulator. The pump consists of a gear pump and the powering electric motor. Due to its location in a high temperature area, the motor suffers often from damage and is a common problem. Especially on hot days the car can drop out of gear or show the gearbox warning light (SMG cog light). Often the following codes appear in the error memory:
- 56 (0x38) Switching-on time of hydraulic unit
- 53 (0x35) low level of pressure reached HE
- 57 (0x39) Misuse of hydraulic unit
- 55 (0x37) Switching-on frequency of hydraulic unit
Pentosin CHF 11S
Pentosin CHF 11S is a synthetic high performance hydraulic fluid for life-time application in modern vehicle aggregates. Pentosin CHF 11S is especially designed for hydraulics in the automotive industry with the highest technical requirements such as in: power steering, level control, shock absorber, hydro-pneumatic suspension, stability and traction control, hydraulics for convertible tops, central lock systems, etc. It is suitable for all extreme conditions and guarantees full performance from -40 Degree Celsius to over 130 Degree Celsius system temperature. Pentosin CHF 11S meets DIN 51 524T3 and ISO 7308 specification standards.
Pressure sensor BMW E46 M3 SMG II
The pressure sensor is located on the hydraulic unit of the M3 SMG II and measures the pressure of the hydraulic fluid.
Set clutch parts BMW E46 M3 SMG II
Set of clutch parts contains:
- Pressure plate
- Friction plate
- Release bearing
Temperature sensor BMW E46 M3 SMG II
The temperature sensor is located on the hydraulic unit of the M3 SMG II and measures the temperature of the hydraulic fluid. Due to its location in a high temperature area, the sensors suffers often from damage and is a common problem.